package Practice02;

import java.util.Scanner;

public class test1 {
  	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int year = scanner.nextInt();
		if (isRun(year)) {
			System.out.println("是闰年！");
		} else {
			System.out.println("不是闰年！");
		}
	}
	public static boolean isRun(int year){
		  if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0){
			  return true;
		  }
		  return false;
	}

}






